reduce

Documentation

Overview

Package reduce could reduce Polygon size both polygon lines and float precise.

Index

• func Compress(input *pb.Timezones, method pb.CompressMethod) (*pb.CompressedTimezones, error)
• func CompressTopoTimezones(input *pb.TopoTimezones) *pb.CompressedTopoTimezones
• func CompressWithPolyline(input *pb.Timezones) *pb.CompressedTimezones
• func CompressedPointsToPolylineBytes(points []*pb.Point) []byte
• func Decompress(input *pb.CompressedTimezones) (*pb.Timezones, error)
• func DecompressTopoTimezones(input *pb.CompressedTopoTimezones) *pb.TopoTimezones
• func DecompressWithPolyline(input *pb.CompressedTimezones) *pb.Timezones
• func DecompressedPolylineBytesToPoints(input []byte) []*pb.Point
• func Do(input *pb.Timezones, skip int, precise float64, minist float64) *pb.Timezones
• func DoTopologyAware(input *pb.Timezones, epsilon float64) *pb.Timezones
• func DoTopologyAwareWithStats(input *pb.Timezones, epsilon float64) (*pb.Timezones, topology.Stats)
• func ReducePoints(points []*pb.Point) []*pb.Point

Functions

func Compress

func Compress(input *pb.Timezones, method pb.CompressMethod) (*pb.CompressedTimezones, error)

func CompressTopoTimezones

func CompressTopoTimezones(input *pb.TopoTimezones) *pb.CompressedTopoTimezones

CompressTopoTimezones converts a TopoTimezones into CompressedTopoTimezones by polyline-encoding all point sequences (shared edges and inline segments). Edge ID references (edge_forward / edge_reversed) are stored as-is.

func CompressWithPolyline

func CompressWithPolyline(input *pb.Timezones) *pb.CompressedTimezones

func CompressedPointsToPolylineBytes

func CompressedPointsToPolylineBytes(points []*pb.Point) []byte

func Decompress

func Decompress(input *pb.CompressedTimezones) (*pb.Timezones, error)

func DecompressTopoTimezones

func DecompressTopoTimezones(input *pb.CompressedTopoTimezones) *pb.TopoTimezones

DecompressTopoTimezones converts a CompressedTopoTimezones back to TopoTimezones by decoding all polyline-encoded point sequences.

func DecompressWithPolyline

func DecompressWithPolyline(input *pb.CompressedTimezones) *pb.Timezones

func DecompressedPolylineBytesToPoints

func DecompressedPolylineBytesToPoints(input []byte) []*pb.Point

func Do

func Do(input *pb.Timezones, skip int, precise float64, minist float64) *pb.Timezones

func DoTopologyAware

func DoTopologyAware(input *pb.Timezones, epsilon float64) *pb.Timezones

func DoTopologyAwareWithStats

func DoTopologyAwareWithStats(input *pb.Timezones, epsilon float64) (*pb.Timezones, topology.Stats)

func ReducePoints

func ReducePoints(points []*pb.Point) []*pb.Point